2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef _SYS_INTERRUPT_H_
30 #define _SYS_INTERRUPT_H_
33 * Describe a hardware interrupt handler.
35 * Multiple interrupt handlers for a specific vector can be chained
36 * together via the 'next' pointer.
40 driver_intr_t *ih_handler; /* code address of handler */
41 void *ih_argument; /* argument to pass to handler */
42 enum intr_type ih_flags; /* flag bits (sys/bus.h) */
43 char *ih_name; /* name of handler */
44 struct ithd *ih_ithd; /* handler we're connected to */
45 struct intrhand *ih_next; /* next handler for this irq */
46 int ih_need; /* need interrupt */
49 int ithread_priority __P((int flags));
50 void sched_swi __P((struct intrhand *, int));
51 #define SWI_SWITCH 0x1
52 #define SWI_NOSWITCH 0x2
53 #define SWI_DELAY 0x4 /* implies NOSWITCH */
55 struct intrhand * sinthand_add __P((const char *name, struct ithd **,
56 driver_intr_t, void *arg, int pri, int flags));
58 extern struct ithd *tty_ithd;
59 extern struct ithd *clk_ithd;
61 extern struct intrhand *net_ih;
62 extern struct intrhand *softclock_ih;
63 extern struct intrhand *vm_ih;